Heater and ventilator for automobiles.



N. L SHTEN.

HEATER AND VENTILTOR FOR AUTOMOBILES. APPLICANON man r.1/\R.21,19:. RENEWEU Fes.14-.191s.

@una a :ais-r HEATER Ann vnucrrta'rgn Foa AUTOMOBILES.

merano?.

:specification ,of Letters Il-stent I ,Patented July i6, 1918.

application filed Mai-eh 21, 1916,y Serial No. 85,531.'4 Renewed February 14, 1918. Serial No. 217,225.

il all whom t may concern L' Be itr know-n that I, NATHAN Louis Snaren, a citizen ofthellnited4 Statestre-v siding at Philadelphimcounty of Philadelv with pipe', may be manipulated by an arm phia, and kStateof Pennsylvania, have invented a new and useful Improvement in Heatersv and Ventilator-s for Automobiles, of' which the following is a tnlhclear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

, The main object otfmy invention is topro- `vide a new andimproved means for heating` automobiles. 'Other objects oit the yinvention are: to so construct the heating contrivance that the sumti" may be utilized asa ventilator in warm weather; to extract the heat from.

the gas exhaust pipe from the engine in such manner as not to throttle, divert or obstruct the iiow of exhaust gas so that 1t may react harm't'ully upon the engine; to insure the proper and equal distribution of heat vto the several registers; to regulate the/volume ot air admitted to the heater and the rate of its iow therethrough; to bring the heated the engine; to simultaneously control either 1 the temperature oit a plurality of heaters or the rate of Howv of air therethrough; and finally/,fito improve and simplify the construction andr operation of the heater. Preferred embodiments ofthe invention are. shown in the drawings, in whichtligure l is a sideelevation ot the heater ,on asmall scale, showing its application to Fig. 2 is a longitudinal sectional View ie heater. Fig. 2^ is a front View ot the air inlet and valve looking in the direction lo'the arrow, Fig. 2. Fig. 3 is a partial longitudinal sectional View oi the heatermoditied by the omission ofthe water chamber. Fig. 4 is a similar View showing another n'iodication in which ati-nospheri(l air is dit?.

t'eiently admitted. Fig. 5 is a section on the line 5 5 olf Fig. 4.

@n the car body a is the main exhaust pipe vb from the engine. "al is a pipe branch ing olf from the pipe Z1 and reunited thereto and lever jl/ to divert the exhaust gases partly 0r wholly'from the main exhaust l) through the branch 'exhaust (l. i

Applied tothe branch pipe al is an annular' air chamber f', f', which, in the construction shown in Figs. 1 and 2, is spaced from the pipe d by an intermediate annular water chamber g. lThe water chamber g may be connected throughy a valved pipe /L with any suitably located waterreservoir `Extending acioss the interior ot' pipe l are a number of pipes or tubes j opening at opposite ends into thewvater chamber-g.'

Arranged across the air chamber are a number of perforated plates c surrounding the exhaust lpipe and ada ted to conduct and radiate the heat; The p ates permit, and `at the same time retard, the passage of the air. The air'passes through the air chamber relatively slowly and is heated by the radiation from the plates and by the plates'themselves, as well as by the exhaustpipe.

l p'refei'todivide the air chamberby partition m, into two separate chambers f, f", having separate inlets and outlets. `l prefer toni-range both air inlets in a single casing n, triangular in cross section, iny open communication with the air chamber andwith an inclined bottoni o facing forwardly, the partition m rising from the bottom 'loy about half way betweenits upper and lower edges.

the air to be heated is forced, by the'parti vtion fm, to divide and flow toward the respectivo outlcts thereby avoiding the tendency that might otherwise exist tor the bulk of the air to vflow toward one outlet.. The bottom a is preferably a` screen provided "with a slide valve 0' which is manipulatable Thus each air chamber receives its `air supply independently of the other and chambers are the outlets leading to registers p, p. Thesemutlets should be-vlocated at o posite ends of the heating apparatus so t at the air entering each air chamber will be ycom elled to flow the length of said chamber be ore escaping by way of the register. These registers are preferably located in front of thevrear and front seats respectively and extend crosswise of the car.

from the engine maintains the4 water at a It will be understood that the hot exhaust relatively high temperature, that the heat is abstracted from the water by the air flowing through the air chambers,' and lthat the heated air issues from the 'registers and warms the interior of the car.4

It `will be noticed that the flow of exhaust gas from the engine'is substantially unobstructed and is moreover not-diverted from a direct path of escape, thus avoiding the interference with the proper operation of the .engine that would arise from choking the engine exhaust. rThe parts should be so poplortioned with reference to the volume o t air space and the rate of flow of the air, as to glve the maximum heating effect; this being redueible tothe extent desired by op- .ertinhg' the shutter'valve e. v n 1 g. 3 an embodiment ofthe invention is. shown wherein the water chamber is omitted, the air chambers r and r (corresponding to the air=chambers, f and f of Fig, 2) being directly applied to the branch gasexhaust pipe, which in Athis -figure is lettered s.l It will be understood that in through one side ofthe air chamber u, and

through the water chamber/v and exhaust branch pipe fw, into: the other side of the air chamber.. The pi es or tubes t may connect with a'tapere header w into which the atmospheric air is admitted. The water chamber in Fig. I may be omitted, if desired. y ,f

One of .the adyantages of my invention is the capacity of/ converting the heater into va ventilator fdr use in warm weather. vTo

' to close the branch exhaust pipe vand the valve o' is., moved to admit a larger volume Y so utilize the apparatus, the valve e is turned ters Patent is:

e water space and to the volume of the`- of air, which escapes through the registers in a continuous current of considerable volume.`

While I have shown two air chambers arranged one behind the otheron the same pipe, it will be understood .that the invention is not limited to any particular number of air chambers, it bein advisable, although not necessary, to provi e as many air chambers as there are to be registers.

Havin now fully described my invention, what I c aim and desire to protect by Let- 1 In a heater for automobiles, the combination with an engine gas exhaust pipe, of a chamber extendin around the gas pi e and adapted to contam water which will a stract heat from the exhaust gas, and an air chamber surroundin the water chamber and provided with an in et and an outlet for air which, in its passage therethrough, will abs tract heat from the water in the first chamber and thereby warm the interior of the car. l

2, In a heater for automobiles, the combi-- nation'with a branched engine gas exhaust ipe, of a valve vat the Junction. of the ranches whereby flow of the exhaust gas chamber extend-ing around one o the branch exhaust pipes, a. water chamber interposed i between the air chamber and such branch exhaust pipe, an inlet 'to the air chamber communicating with the atmosphere, and a lrjegister communicating with the air cham- 3. In a heater for automobiles, the combination with an engine gas exhaust pipe, of two independent air chambers arranged along the pipe one in advance of the other, a commoncasing affording an inlet to both chambers, said casing having ,an inclined front, a partitionrising from said inclined chambers, a mova le closure for said -inclined front to regulate the volume of air admitted to the air chamber, and registers communicating' respectively with the front of the frontair chamber and' the rear of the rear air chamber.

A4. In a heater for automobiles, the combination with an engine gas exhaust pipe, of two independent air chambers arranged along the 'pipe one in advance of the other,- there being Ian air inlet at the rear ofi the front chamber and at the front of the rear chambermeans positioned at said inlet to distribute the a1r proportionately to the front and rear chambers, and two registers ycommunicating respectivelyrwith the front of the front air chamber andthe rear of the rear air chamber. i

tol

may be directed through either ipe, an air f front and divertin the air to the respective 5. In a heater for automobiles, the combination Awith an engine gas exhaust pipe, of an air chamber extending around the exhaust pipe, a Water chamber 'interposed be- 15- tween the air chamber and the exhaust pipe,

and tubes extending throughpthe Walls of' 4 kthe gas exhaust vpipe 'and` transversely through the interior of said pipe and communicatngiwth said Water chamber.

In testimony ofl which invention, I .have 10 hereunto set my hand, at Philadelphia, on this 29th day of February, 1916.

NATHAN LOUIS SHATEN. 

